Good day. Could you please tell me if there are any mothers here with…

Good day. Could you please tell me if there are any mothers here with children who don't speak at 1.4 years old and possibly older? We saw an osteopath, she said that we have developmental delay. As the child doesn't respond to their name except for "mom", they don't say other words. They don't know the sign language gesture "give". We are actively working on sensory play, nebulization therapy, etc. If anyone has something similar, please share your experience ??